decimal

adjective
dec·​i·​mal | \ ˈde-sə-məl How to pronounce decimal (audio) , ˈdes-məl \

Definition of decimal

 (Entry 1 of 2)

: numbered or proceeding by tens:
a : based on the number 10 especially : expressed in or utilizing a decimal system especially with a decimal point
b : subdivided into 10th or 100th units decimal coinage

decimal

noun

Definition of decimal (Entry 2 of 2)

: any real number expressed in base 10 especially : decimal fraction

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Other Words from decimal

Adjective

decimally \ ˈde-​sə-​mə-​lē How to pronounce decimal (audio) , ˈdes-​mə-​ \ adverb

Examples of decimal in a Sentence

Adjective In the number 8.901, the 9 is in the first decimal place. Noun The number 67.398 is a decimal. It is equal to the whole number 67 plus the decimal.398. Seven-tenths written as a decimal is .7. The decimal.2 is equal to the fraction 2/10.
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Recent Examples on the Web: Adjective There is a mysterious 10-digit decimal number, abcdefghij. Quanta Magazine, "How to Solve Our Three John Conway-Inspired Puzzles," 20 Nov. 2020 Instead of only changing the finest decimal points at the very end, a value further forward has also changed. Caroline Delbert, Popular Mechanics, "Scientists Have Pinpointed the Number That Explains the Universe," 4 Dec. 2020 Because Bitcoin can be divided out to eight decimal places, small fractions of a whole can be purchased. Charlie Wells, Bloomberg.com, "Billionaires and Arya Stark Are Buying Bitcoin. Should You?," 2 Dec. 2020 Watch your change and decimal points, as money mistakes are a real possibility. Tribune Content Agency, oregonlive, "Horoscope for Nov. 30, 2020: Happy birthday Ben Stiller; Pisces, powerful inspiration is headed your way," 30 Nov. 2020 Typically, updates with two decimal points in the number are minor bug fix updates, those with just one decimal point are small feature updates, and those with just a whole number (like iOS 14) are annual major releases. Samuel Axon, Ars Technica, "Apple pushes out iOS 14.2.1, and it’s mostly bug fixes," 20 Nov. 2020 Each one could be divided and multiplied using a decimal scale. National Geographic, "The French Revolution not only toppled a king—it also forged the metric system," 10 Sep. 2020 Typically, iOS or iPadOS updates that have two decimal points are bug-fix updates, and releases that bring new features have just one decimal point. Samuel Axon, Ars Technica, "Apple releases new software updates for iPhones, iPads, and Macs," 12 Aug. 2020 Grinding out additional decimal places of 3D critical exponents is beside the point, said Slava Rychkov, a physicist at the Institut des Hautes Études Scientifiques in France who is involved in the effort. Quanta Magazine, "The Cartoon Picture of Magnets That Has Transformed Science," 24 June 2020 Recent Examples on the Web: Noun There’s nothing tricky at this step—just round up if the decimal is 0.5 or higher, and round down otherwise. Dave Linkletter, Popular Mechanics, "The Iowa Caucuses Were a Complete Mess—and We Did the Math to Prove It," 7 Feb. 2020 Real examples and applications are messy, with ugly roots made of decimals or irrational numbers. Caroline Delbert, Popular Mechanics, "Mathematician Finds Easier Way to Solve Quadratic Equations," 6 Dec. 2019 But for astronomers, decimals can make the difference between seeing something extraordinary and missing it. Author: Caleb Jones, Anchorage Daily News, "Hawaii or Spain? Telescope experts say it may not matter," 26 Aug. 2019 For example: If a dog is 3 years old, the natural log of 3 is 1.0986 (the decimals continue). Claudia Harmata, PEOPLE.com, "There's a Better Way Calculate Your Dog's True Age in Dog Years, Researchers Say," 19 Nov. 2019 But for astronomers, decimals can make the difference between seeing something extraordinary and missing it. Author: Caleb Jones, Anchorage Daily News, "Hawaii or Spain? Telescope experts say it may not matter," 26 Aug. 2019 Irrational numbers have an infinite decimal expansion. Quanta Magazine, "Why Mathematicians Can’t Find the Hay in a Haystack," 17 Sep. 2018 Many people conceptualize irrational numbers by rounding them to fractions or decimals: estimating π as 3.14, which is equivalent to 157/50, leads to widespread celebration of Pi Day on March 14th. Leila Sloman, Scientific American, "New Proof Solves 80-Year-Old Irrational Number Problem," 16 Sep. 2019 But for astronomers, decimals can make the difference between seeing something extraordinary and missing it. Author: Caleb Jones, Anchorage Daily News, "Hawaii or Spain? Telescope experts say it may not matter," 26 Aug. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'decimal.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of decimal

Adjective

1608, in the meaning defined above

Noun

1651, in the meaning defined above

History and Etymology for decimal

Adjective

French décimal, from Medieval Latin decimalis of a tithe, from Latin decima tithe — more at dime

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Time Traveler for decimal

Time Traveler

The first known use of decimal was in 1608

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Statistics for decimal

Last Updated

1 Mar 2021

Cite this Entry

“Decimal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/decimal. Accessed 7 Mar. 2021.

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More Definitions for decimal

decimal

adjective

English Language Learners Definition of decimal

 (Entry 1 of 2)

mathematics : based on the number 10

decimal

noun

English Language Learners Definition of decimal (Entry 2 of 2)

mathematics : a number that is written with a dot between the part of the number that is equal to 1 or more and the part of the number that is less than 1

decimal

adjective
dec·​i·​mal | \ ˈde-sə-məl How to pronounce decimal (audio) , ˈdes-məl \

Kids Definition of decimal

 (Entry 1 of 2)

1 : based on the number 10 : numbered or counting by tens We use a decimal system of writing numbers.
2 : expressed in or including a decimal The decimal form of ¹/₄ is .25.

decimal

noun

Kids Definition of decimal (Entry 2 of 2)

: a proper fraction in which the denominator is 10 or 10 multiplied one or more times by itself and is indicated by a point placed at the left of the numerator the decimal .2=²/₁₀, the decimal .25=²⁵/₁₀₀, the decimal .025=²⁵/₁₀₀₀

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